掺铈YAG荧光陶瓷封装白光LED的光致发光性能研究

Q4 Physics and Astronomy

光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144003.0277

罗文飞 Luo Wenfei, 张. Z. Bin, 刘根 Liu Gen, 钟哲强 Zhong Zheqiang

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引用次数: 0

摘要

利用光学分析软件ASAP，模拟了Ce3+掺杂YAG荧光陶瓷的光致发光特性。结果表明:在Ce3+掺杂浓度一定的情况下，随着荧光陶瓷厚度的增加，Ce3+掺杂YAG荧光陶瓷封装的白光LED光通量先增大后减小，相关色温逐渐减小后保持在一个较低的值;颜色坐标不断增加到CIE中的黄色区域。存在一个最佳的荧光陶瓷厚度，使其发光效率达到最大。同时，荧光陶瓷的最佳厚度随Ce3+掺杂密度的增加而减小。随着荧光陶瓷与LED芯片封装距离的增加，白光LED的光通量、色坐标和效率逐渐增加，而相关色温逐渐降低，LED的发光趋势变暖。

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Study on photoluminescence properties of Ce-doping YAG fluorescent ceramics packaging white LED

Using the optical analysis software ASAP,the photoluminescence properties about Ce3+-doping YAG fluorescent ceramics are simulated.The results show that for a given Ce3+-doped density,with the increasing of the thickness of the fluorescent ceramics,the luminous flux of the white LED packaged by Ce3+-doping YAG fluorescent ceramics first increases and then decreases,whereas the correlated color temperature gradually decreases and then keeps a low value. The color coordinates keeps increasing to the yellow area in the CIE.There exists an optimal thickness of the fluorescent ceramics,resulting in the maximum luminous efficiency.Meanwhile,the optimal thickness of the fluorescent ceramics decreases with the increasing of the Ce3+-doped density.With the increasing of the packaging distance of the fluorescent ceramics to the LED chip,the luminous flux,color coordinates and efficiency of the white LED gradually increase,while the correlated color temperature gradually decreases,and the light of LED trends warm.

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".